Alert archive / California / Flash Flood Warnings in 2010
Flash Flood Warning 13, NWS Las Vegas, NV
NWS Las Vegas, NV issued this flash flood warning at Feb 6, 2010, 9:31 PM PST for San Bernardino County, California; Clark County, Nevada; Mohave County, Arizona. It was in force for 59 min. No storm report in the archive falls inside the area while it was in force.
The area
The outline as issued.
The facts
- Issued
- Feb 6, 2010, 9:31 PM PST (05:31 UTC)
- Expired
- Feb 6, 2010, 10:30 PM PST
- In force
- 59 min
- Issued by
- NWS Las Vegas, NV
- Area
- Storm-based polygon
- Flood severity
- None
Counties Mohave County, AZ, San Bernardino County, CA, Clark County, NV
The radar
The Las Vegas radar (KESX), 35 km from the middle of the area, began a volume at 05:31 UTC, the scan nearest the moment this went out.
Open the radar archive at this moment
The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.
The nearest sounding before it
Flgstf/Belemont, AZ (KFGZ), launched 00:00Z, 5.5 hours before the alert went out and 268 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.
- Mixed-layer CAPE
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 846 m above ground
- 0-6 km bulk shear
- 54 kt
- 0-1 km storm-relative helicity
- 128 m²/s²
- 0-3 km storm-relative helicity
- 162 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
996
WGUS55 KVEF 070531
FFWVEF
AZC015-CAC071-NVC003-070630-
/O.NEW.KVEF.FF.W.0013.100207T0531Z-100207T0630Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE LAS VEGAS NV
931 PM PST SAT FEB 6 2010
THE NATIONAL WEATHER SERVICE IN LAS VEGAS HAS ISSUED A
* FLASH FLOOD WARNING FOR...
WEST CENTRAL MOHAVE COUNTY IN NORTHWEST ARIZONA...
EAST CENTRAL SAN BERNARDINO COUNTY IN SOUTHEAST CALIFORNIA...
EXTREME SOUTH CENTRAL CLARK COUNTY IN SOUTHERN NEVADA... THIS
INCLUDES THE CITY OF SEARCHLIGHT...CAL-NEV-ARI AND COTTONWOOD
COVE......
* UNTIL 1030 PM PST/1130 PM MST/
* AT 1028 PM MST...LOCALLY HEAVY RAIN CONTINUES TO BE INDICATED BY
THE NATIONAL WEATHER SERVICE DOPPLER RADAR OVER THE WARNED AREA.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
BE ESPECIALLY CAUTIOUS AT NIGHT WHEN IT IS HARDER TO RECOGNIZE THE
DANGERS OF FLOODING. IF FLASH FLOODING IS OBSERVED ACT QUICKLY. MOVE
UP TO HIGHER GROUND TO ESCAPE FLOOD WATERS. DO NOT STAY IN AREAS
SUBJECT TO FLOODING WHEN WATER BEGINS RISING.
IN DESERT TERRAIN THERE ARE HUNDREDS OF LOW WATER CROSSINGS WHICH ARE
POTENTIALLY DANGEROUS IN HEAVY RAIN. DO NOT ATTEMPT TO TRAVEL ACROSS
FLOODED ROADS. TURN AROUND...DONT DROWN. FIND ALTERNATE ROUTES.
&&
LAT...LON 3555 11492 3589 11440 3563 11417 3492 11482
3492 11524
$$
JENSEN2 follow-up statements
191
WGUS75 KVEF 070609
FFSVEF
FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE LAS VEGAS NV
1009 PM PST SAT FEB 6 2010
AZC015-CAC071-NVC003-070630-
/O.CON.KVEF.FF.W.0013.000000T0000Z-100207T0630Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
MOHAVE AZ-SAN BERNARDINO CA-CLARK NV-
1009 PM PST SAT FEB 6 2010
...A FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 1030 PM PST/1130 PM
MST/ FOR EXTREME SOUTH CENTRAL CLARK...EAST CENTRAL SAN BERNARDINO
AND WEST CENTRAL MOHAVE COUNTIES...
AT 1007 PM PST...AN AREA OF THUNDERSTORMS CONTINUE TO PRODUCE
LOCALLY HEAVY RAINFALL IN THE WARNED AREA. THIS AREA IS SLOWLY
MOVING TO THE SOUTHEAST.
LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO CAL-NEV-ARI
AND COTTONWOOD COVE
PRECAUTIONARY/PREPAREDNESS ACTIONS...
BE ESPECIALLY CAUTIOUS AT NIGHT WHEN IT IS HARDER TO RECOGNIZE THE
DANGERS OF FLOODING. IF FLASH FLOODING IS OBSERVED ACT QUICKLY. MOVE
UP TO HIGHER GROUND TO ESCAPE FLOOD WATERS. DO NOT STAY IN AREAS
SUBJECT TO FLOODING WHEN WATER BEGINS RISING.
IN DESERT TERRAIN THERE ARE HUNDREDS OF LOW WATER CROSSINGS WHICH ARE
POTENTIALLY DANGEROUS IN HEAVY RAIN. DO NOT ATTEMPT TO TRAVEL ACROSS
FLOODED ROADS. FIND ALTERNATE ROUTES. SEVERAL INCHES OF SWIFTLY
FLOWING WATER CAN CARRY VEHICLES AWAY.
&&
LAT...LON 3555 11492 3589 11440 3563 11417 3492 11482
3492 11524
$$
JENSEN438
WGUS75 KVEF 070626
FFSVEF
FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE LAS VEGAS NV
1026 PM PST SAT FEB 6 2010
AZC015-CAC071-NVC003-070632-
/O.EXP.KVEF.FF.W.0013.000000T0000Z-100207T0630Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
MOHAVE AZ-SAN BERNARDINO CA-CLARK NV-
1026 PM PST SAT FEB 6 2010
...THE FLASH FLOOD WARNING WILL EXPIRE AT 1030 PM PST/1130 PM MST/
FOR EXTREME SOUTH CENTRAL CLARK...EAST CENTRAL SAN BERNARDINO AND
WEST CENTRAL MOHAVE COUNTIES...
SHOWERS AND ISOLATED THUNDERSTORMS WILL CONTINUE OVER THE AREA
THROUGH THE REMAINDER OF THE EVENING BEFORE DECREASING OVERNIGHT.
HOWEVER HEAVY RAINFALL WHICH CAN PRODUCE FLASH FLOODING IS NO LONGER
EXPECTED...THUS THE FLASH FLOOD WARNING WILL BE ALLOWED TO EXPIRE AS
OF 1030 PM PST/ 1130 PM MST.
ALTHOUGH THE FLASH FLOOD WARNING WILL NO LONGER BE IN EFFECT...
MOTORISTS ARE URGED TO USE CAUTION THROUGH THE REST OF THE NIGHT.
FLOWING WATER IN THE NORMALLY DRY WASHES...PONDED WATER IN LOW LYING
AREAS...AND POSSIBLE DEBRIS OVER ROADWAYS MAY BE ENCOUNTERED INTO
SUNDAY MORNING.
LAT...LON 3555 11492 3589 11440 3563 11417 3492 11482
3492 11524
$$
JENSENThe office that day
Everything else NWS Las Vegas, NV issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Feb 6, 4:08 PM PST | Flash Flood Warning | VEF | San Bernardino | 82 min |
| Feb 6, 7:09 PM PST | Flash Flood Warning | VEF | San Bernardino | 2 hr |
| Feb 6, 8:30 PM PST | Areal Flood Advisory | VEF | Clark, Nye | 48 min |
| Feb 6, 4:43 PM PST | Flash Flood Warning | VEF | Mohave | 92 min |
| Feb 6, 5:01 PM PST | Flash Flood Warning | VEF | Mohave | 89 min |
Nearby
Flash Flood Warnings in California, 2010Flash Flood Warnings in Nevada, 2010Flash Flood Warnings in Arizona, 2010Every flash flood warning in 2010
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.